Low power high precision piecewise linear (PWL) waveform generator
US11451215B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2021 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Jun 9, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/04
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A piece-wise linear (PWL) waveform generator includes a current generator that generates a reference current, an output capacitor across which an output voltage is developed to form a PWL waveform, charging and discharging current sources for charging/discharging the output capacitor based on the reference current, a clock-controlled switch network for controlling the charging/discharging of the output capacitor, and a feedback control loop that senses the output voltage and controls the current generator to vary the reference current based on the output voltage. A first switch controlled by a first clock signal periodically connects/disconnects a current source output to/from a load impedance and a second switch controlled by a second clock signal periodically connects/disconnects a capacitor to/from the current source while disconnected from the load impedance. The capacitor capacitance is based on a predetermined voltage to mitigate glitching when the first switch connects the current source output to the load impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.